Vintage amplifiers and dating information Oahu, Oliver, Option 5, Orange


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o	info updated 26/1/2010
Oahu	Oahu amps came out of the Oahu Publishin Co in Cleveland Ohio. The earliest amp is from the 1930s - possible made by Lyon and Healy. During the 1940s and 50s made by Valco. [Source: The Amp Book: A Guitarist's Introductory Guide to Tube Amplifiers By Donald Brosnac] Oahu pics and history Oahu schematic Reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Oahu I took these photos of an Oahu Tonemaster amp with permission at Chicago Music Exchange in 2008.
Oliver	Oliver amp catalog http://www.pmillett.com/file_downloads/oliver_amps.pdf Reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Oliver
Ooh La La
Option 5	Reviews http://reviews.harmony-central.com/reviews/Effects/brand/Option+5
Orange/ Matamp	Founded by Cliff Cooper in 1968 the first Orange amps were supplied by a small north of England company called Radio Craft which made a versatile, top-spec 30-watt valve guitar amp - the Matamp Series 2000. In autumn 1968, Cliff placed an order to make some 100-watt valve amps for Orange. Guitars and drums were part of the line up in the 1970s. In the mid-1990s Cliff licensed the Orange trademark to the Gibson Corporation in America but Orange went back to Cliff’s hands in the late 90s. Currently made in UK and China. [Source: Orange ] Dating Orange amps http://users.telenet.be/orangefg/dating_page.htm This forum should help you http://www.orangeamps.com/forumtest/forum.asp?FORUM_ID=4 Other Orange info Orange amp field guide http://www.valveamps.com/orangeod.htm http://www.geocities.com/plexy2000/page9.html http://en.wikipedia.org/wiki/Orange_Music_Electronic_Company Orange pictures http://www.soulbuzz.de/orange/ Orange amp catalogs 1971 http://forum.orangeamps.com/topic.asp?TOPIC_ID=5841 1973 http://www.orangeamps.com/forumtest/topic.asp?TOPIC_ID=4674 http://www.orangeamps.com/forum/forum.asp?FORUM_ID=4 ads http://www.vintageguitars.org.uk/advertisements/orange Orange amps manuals and schematics http://www.freeinfosociety.com/electronics/schempage.php?cat=1 http://www.britishaudioservice.com/manuals.shtml http://www.drtube.com/guitamp.htm http://www.kbapps.com/schematics.html http://www.schematicheaven.com/post70s.htm http://users.telenet.be/orangefg/orange_mods.htm Reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Orange
Orbitron	Made late 1960s to 1970s
Ovation	http://www.ovationtribute.com/Ovation%20Amps/Ovation%20Amps.html http://www.ovationgallery.com/pagecatalog.htm ad http://www.vintageguitars.org.uk/advertisements/Ovation Image eBay:
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